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Chemical And Physical Changes And Properties; Elements, Compounds, And Mixtures
Test Description: Review Chemical and Physical Changes and Properties, Elements, compounds, and mixtures
Instructions: Answer all questions to get your test result.
1) Which of the following is an example of a chemical change?
A
rusting
B
dissolving
C
freezing
D
melting
2) Which of the following is an example of a physical change?
A
rusting
B
evaporation
C
nuclear fission
D
combustion
3) An example of a physical property of matter would be...
A
mass
B
pH
C
reactivity
D
flammability
4) An example of a chemical property of matter would be...
A
density
B
pH
C
length
D
color
5) Which of the following is an example of a mixture?
A
Air
B
Water
C
Copper wire
D
Pure gold
6) Which of the following is a pure substance?
A
Lemonade
B
Salt water
C
NaCl
D
Fruit salad
7) A mixture that looks like it is all one substance is called a(n)
A
element
B
solution
C
compound
D
acid
8) _________ are formed when two or more elements combine together to make a pure substance.
A
Combinations
B
Compounds
C
Solutions
D
Mixtures
9) A(n) _________ is the smallest unit of an element that still retains the properties of that element.
A
molecule
B
ion
C
atom
D
gram
10) All matter on earth is made up of combinations of ~100 _________.
A
compounds
B
elements
C
atoms
D
mixtures
*select an answer for all questions
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